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Forum: OpenFOAM Meshing & Mesh Conversion

July 10, 2013, 13:33

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

I will leave that thread to the experts. ...

I will leave that thread to the experts. However, you may want to add some boundary layers cells to your mesh and/or increase the refinement near the surface. If you give as much info as possible...

Forum: OpenFOAM Meshing & Mesh Conversion

July 10, 2013, 12:38

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

This is fine, anything above a 70 would be a...

This is fine, anything above a 70 would be a concern.

also...if you are doing a 2D case, you will be better off doing a 2D mesh. have a look at
...

Forum: OpenFOAM Meshing & Mesh Conversion

July 9, 2013, 13:02

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

the (6 6) would mean that if a featureEdge is...

the (6 6) would mean that if a featureEdge is encountered then the same refinement (a level 6) will be used. If you had done a (6 7) then a further refinement of 7 would be done around the "turn" of...

Forum: OpenFOAM Meshing & Mesh Conversion

July 9, 2013, 12:14

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

From my experience lunderSharmaKE needs y+...

From my experience

lunderSharmaKE needs y+ <= 1

but it really can't be calculated until your simulation has been run to know how much further you need to refine your mesh. You can use the...

Forum: OpenFOAM Meshing & Mesh Conversion

July 9, 2013, 11:50

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

This ultimately depends on your y+ and turbulence...

This ultimately depends on your y+ and turbulence model you are using so I can't comment on it. To snap to the surface, it should be fine.

Forum: OpenFOAM Meshing & Mesh Conversion

July 9, 2013, 10:39

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

The closer you make your base mesh cell aspect...

The closer you make your base mesh cell aspect ratio to unity (equal length in x y and z direction), the better results you will see in SHM. Try:

blocks
(
hex (0 1 2 3 4 5 6 7) (880 480 1)...

Forum: OpenFOAM Meshing & Mesh Conversion

July 8, 2013, 15:00

Replies: 16

[Other] "did not succesfully snap mesh. Giving up"

Views: 1,675

Posted By chegdan

I would make your base mesh smaller (i.e. change...

I would make your base mesh smaller (i.e. change your blockMeshDict to have more subdivisions), decrease your levels on your edges from 6 7 to 5 6 or lower depending on your base mesh sizing and...

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